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Front

How many electrons does potassium K contain?

Back

19

Front

An atom of the element with atomic number 6 always has _____

Back

six protons in its nucleus

Front

Subatomic particles with a negative charge

Back

Electrons

Front

What is atomic number?

Back

Number of protons in an atom

Front

Subatomic particle with a charge of 0

Back

neutron

Front

What is the charge of a proton?

Back

Positive

Front

What is the charge of an electron?

Back

Negative

Front

What is the mass of a neutron compared to a proton?

Back

Approximately equal

Front

What is the nucleus of an atom composed of?

Back

Protons and neutrons

Front

What is the atomic mass of an element?

Back

The weighted average mass of an atom's isotopes